Yarn package tube transfer method and means

ABSTRACT

An improved method and means is provided for transferring yarn packages from core tubes on which they have been wound to perforate or permeable cores suitable for supporting the packages for dyeing. The transfer is consistently effected upon placing a core tube supported package and dye core to be substituted in position for transfer.

Umted States Patent 1191 1111 3,906,598 Hacker Sept. 23, 1975 [5 YARN PACKAGE TUBE TRANSFER 3,374.959 3/1968 Tigges 242/1 METHOD AND MEANS 3,425,110 Z/l969 Willis 3,681,007 8/1972 Girard Inventor: George Gordon Hacker, y, 3,833,974 9/1974 Girard 28/1 R FOREIGN PATENTS OR APPLICATIONS Assigneel Gaston County Dyeing Machine 1,259,559 3/1961 France 28/1 R Company, Mount Holly, N.C. [22] Filed; Aug 19 1974 Primary Examiner-Louis K. Rimrodt Attorney, Agent, or Firm-Richards, Shefte & [2]] Appl. No.: 498,265 Pinckney 52 us. 01 28/1 R; 28/72 R; 242/1 [571 ABSTRACT [51] Int. Cl. D01H 9/00; D026 1/20 An impr ve m hod and means is provided for trans- [58] Field Of Search 28/1 R, 21, 72 R; 242/]; ferring yarn packages from core tubes on which they 68/189, 198; 29/200 D have been wound to perforate or permeable cores suitable for supporting the packages for dyeing. The [56] References Cited transfer is consistently effected upon placing a core UNITED STATES PATENTS tube supported package and dye core to be substituted 2,736,184 2 1956 H'arvey et a1. 68/189 x m posmo for transfer 3,246,391 4/1966 Coleman 29/200 D 9 Claims, 8 Drawing Figures T /6 9 20 1 1-1 5 5 l l LA 3 1: f l I 2 1- J 3 2 g, T 34 M P US Patent Sept. 23,1975 Sheet 1 of3 3,906,598 w U ate'nt Sept. 23,1975 Sheet 3 of 3 3,906,598

YARN PACKAGE TUBE TRANSFER METHOD AND MEANS I CROSS-REFERENCES TO RELATED APPLICATIONS None; except that the present invention is concerned with an improved modification of method and means disclosed in copending application Ser. No. 443,629, filed Feb. 19, 1974, assigned to a common assignee which is of related interest for that reason.

BACKGROUND OF THE INVENTION The above-noted copending application discloses and claims a method and means involving the insertion of dye cores within core tubes carrying yarn packages to be transferred for dyeing, and successive manual presentation of the yarn packages and inserted dye cores to an endwise support for the yarn packages at which an expandable and reciprocable chuck is ar ranged for interiorly gripping an end portion of the core tube carrying the presented package, followed by chuck actuation for gripping and withdrawing the core tube while manually guiding the inserted dye core to a proper package supporting position in its place.

Such tube transfer operations are employed in preparation for dyeing in order to allow the yarn packages to be wound initially on relatively inexpensive paper or plastic core tubes and maintain them in inventory on such supports so thatno more of the rather expensive dye cores are needed than is required to service the package dyeing operation. To facilitate the transfer operation it is customary to employ a core tube initially that is diametrically sized somewhat larger than the dye core that is to replace it for dyeing, preferably enough larger to allow insertion of the dye core within the core tube prior to transfer. This practice provides the additional advantage of relaxing winding tension adjacent the package center by allowing some contraction onto the dye core, which is particularly helpful when textured yarns are being handled.

U.S. Nos. 3,425,l l and 3,681,007 are generally representative of prior art practice, although the recent trend in equipment for performing the transfer operation has been towardproviding for automatic operation with results that havebeen less than satisfactory because of troublesome problems encountered in dealing with varying core tube condition and package carrying position, and in assuring a proper replacement location of the dye cores. The previously noted copending application discloses a transfer procedure and enabling means that eliminates such problems'by utilizing a significant degree of manual manipulation in a manner that equals or improves the handling rates possible with automatic mechanisms heretofore in use.

While the operating results provided by the method and means of this copending application are exceptionally good the manual manipulation involved places the burden of locating the dye cores properly within the transferred packages on the operator, whereas the operator is relieved considerably and improved consistency is gained by locating the dye cores as the present invention allows.

SUMMARY OF THE INVENTION In accordance with the present invention yarn packcorresponding end portions of the dye core and core tube over a reciprocable chuck means having spaced first and second positions for respectively receiving the dye core and core tube. At each of these positions the chuck means is expandable for gripping the dye core and core tube end portions, so that by actuating the chuck means effect such gripping and causing it to move away from the corresponding yarn package end, while supporting the package against movement therewith, the dye core is pulled into place within the package as the core tube is withdrawn. When the dye core has thus been moved to a proper position within the package for supporting it, the dye core grip at the first chuck means position is released to leave it in place while completing the withdrawal of the core tube.

Whenever the yarn packages being handled have an appreciable tendency to contract onto the substituted dye core, as is the 'case with textured yarn packages, the dye core is normally held sufficiently by this contraction to provide consistent stripping from the chuck means upon release. If, however, the contraction tendency is not sufficient for this purpose, equally consistent stripping results are readily obtained by having the operator hold the dye core by hand when it reaches a proper position at the end of the package opposite that from which the core tube is being withdrawn. Such hand holding by the operator requires little effort on the part of the operator and simply involves advanced placing of his hand in the position it will need to assume in handling the yarn package upon completion of the transfer operation, without any requirement for guiding the dye core into place as in the priorcopending application noted above.

In any event, the manner in which the transfer is effected according to the present invention results in a progressive reception of the, yarn package on the dye core as it is moved into place for package support-with DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side elevation of package transfer means embodying the present invention;

FIG. 2 is an enlarged sectional detail of the chuck means employed in the FIG. 11 embodiment;

FIG. 3 is a schematic diagram of the air control system for the FIG. 1 embodiment; and

FIGS. 4 through 8 are sequential diagrammatic illustrations of the package transfer operating sequence. A

DETAILED DESCRIPTION OF THE INVENTION The arrangement of package transfer means indicated in FIG. 1 includes a frame standard 10 (partially shown) which is formed to provide a suitable floor support and also to provide a cabinet enclosure for control system components. The upper end of frame standard 10 carries an inverted channel. housing 12 that extends therefrom at an upwardly inclined disposition and that is fitted at its extending end with a yarn package support plate 14 in perpendicular relation. This support plate 14 is proportioned for endwise support of a yarn package while being apertured for clearing a core tube on which the package has been wound.

Rearwardly in channel housing 12 a fluid pressure voperating cylinder 16 is mounted so as to dispose a pis-' ton rod 18 extending forwardly therefrom in axial alignment with. the aperture in support plate 14. The

.tion at thechuck means 20 is withdrawn sufficiently for completing suchan operation. At retracted position the chuck means 20 is withdrawn through a tubular stripping sleeve 22 attached within channel housing 12 slotted at itsbottom to clear movement of a downwardly extending bracket arm.24 carried by chuck means 20 to support a rearwardly extending rod member 26 that operates control systemswitches (or valves) 28, 30 and 32 during chuck meansreciprocation. At its initial position, an operating cycle'of chuck means 20 is actuated through an additional switch (or valve) 34 mounted on support plate 14 for triggering by contact with a yarn package placed on plate 14, as will appear further presently.

. The form of chuck means 20 is detailed in FIG. 2 as comprising a composite and generally cylindrical body having a base component 36, a cap component 38, and intermediate body components 40 and 42 at which first and secondresilient gripping components 44 and 46 are arranged in spaced relation. The base component 36 is axially bored and tapped for assembly at the extending end of piston rod 18 andhas the bracket arm 24 formed thereat for carrying the rod member126, as well ashaving a tubular spindle portion 36 projecting axially therefrom on which the remaining chuck means components are positioned in assembled relation. The chuck means assembly is secured by a stud 48 that projects through the cap component 38 and engages the'adjacentend ofthe base spindle portion 36'.

Cap component 38 is bored-internally at stepping diameters for a positioningassembly fit over the adjacent end of base spindle portion 36' and over an extending reduced diameter portion of the adjacent intermediate body component 40, as well as to provide a containing rabbetfor one edge portion of the first gripping component 44. The opposite edge portion of gripping component 44 is contained in complementary rabbet formed in the intermediate component 40. Externally, the cap component 38 is tapered adjacent its extending end to form a nose portion 38 thereat for facilitating guid ance of a dye core end portion for location over the gripping component 44, while the intermediate component 40 is adjacently reduced in diameter to correspond'with the major diameter of cap component 38 so as to provide an annular shoulder 40 serving as a locating seat for a, dye core at gripping component 44.

Rearwardly of this locating shoulder 40, the intermediate component 40 has an externally tapered portion 40' merging with a rear portion of sufficiently increased diameter for directing ,a core tube end portion over the second gripping component 46. Like cap component 38, the intermediate body component 40 is also bored internally at stepping diameters at its rearward face for a positioning assembly fit over the base spindle portion 36' and over an extending reduced diameter portion of the other intermediate body component 42, and to provide a containing rabbet for the adjacent edge portion of the second gripping component 46. The opposite edge portion of gripping component is contained in a complementary rabbet formed in the other intermediate component 42.

This other intermediate component 42 bears rearwardly at a forwardly facing peripheral rim portion 36" of base component 36 that is raised and spaced concentrically in relation to spindle portion 36 to provide, as at 50, for connection with a fluid pressure source thereat by which the second gripping component can be expanded. Component 42 is further formed for a rearward positioning fit within rim portion 36" and'a forward positioning fit on spindle portion 36', but is internally bored forwardly and limited in rearward extent within rim portion 36" to provide communication from a fluid pressure connection at 50 to lateral ports in component 42 through which fluid pressure can be delivered for expanding the second gripping component 46. Expansion of the first gripping component 44 is provided for by arranging at 52 for connection of a fluid pressure source with base component 36 in communication with its tubular spindle portion 36' so that fluid pressure can be delivered through lateral ports in spindle portion 36 and intermediate portion 40 to gripping component 44.

The control system for the package transfer operation, in which the motive power is preferably supplied by air, is diagrammed in FIGv 3 so as to provide a basis for describing a transfer operating cycle in relation to the sequential transfer diagrams forming FIGS. 4 through 8. Referring to FIG. 3 initially, an ON-OFF valve 54 is opened to make ready for operation by delivering an air supply from a supply line 56 to the control system. Beyond valve 54, the air supply is directed through a filter 58 (which is fitted with a drain line 58') and a regulator 60 to both of two branching paths, one of which paths runs through a lubricator 62 to the supply port of a four-way spool valve 64 included in a control box assembly indicated by the broken line rectangle designated by the referennce numeral 66.

This spool valve 64 serves as a directional control for the cylinder 16 by which the chuck means 20 is reciprocated. Assuming that the transfer means had previouslybcen stopped at the completion of an operating cycle. the indicated right hand mode of valve 64 will be operative to deliver air at the rear of cylinder 16 so as to maintain the chuck means 20 fully extended at its completed cycle position. If, however, the transfer means has previously been stopped during the operating cycle for any reason. the valve 64 upon again becoming operative will cause the cycle to be completed so as ultimately to move the chuck means 20 to and maintain it at its fully extended position. Whenever the cylinder control valve 64 actuates the operating cylinder to move chuck means 20in either direction, it also serves to exhaust the opposite end of the cylinder through one or the other of muffled exhaust fittings 64' that include variable flow control means by which the rate of chuck means movement can be set at a desired speed.

The branching path by which air is directed to the cylinder control valve is also connected at port No. 2 of a connector block 68 additionally included in the assembly at control box 66. From port No. 2 of this connector block 68 an air supply connection runs from control box 66 to the previously mentioned final switch 32 of the series that is operated by the rod member 26 extending rearwardly from chuck means 20. This switch 32 is a cam operated, normally closed, thre e-.

way poppet valve, and the connection thereto from connector block port No. 2 is normally blocked thereat by the lower indicated mode of this valve which is normally operative. A by-pass connection 70 also makes the air supply available at middle switch 30 of the above-noted series which is a poppet valve of the same sort so that the air supply is normally blocked there as well, while a further by-pass connection 72 directs the air supply additionally to the valve 34 at the package support plate 14, which is a push button operated, normally closed, three-way poppet valve so that the air supply is normally blocked here again, although remaining available at all three of these valves 34, 30 and 32. The other branching air supply path beyond regulator 60 runs to port No. 4 of connector block 68 from which a connection extends to a three-way directional control valve 74 at which the air supply will also be blocked as indicated after an operating cycle has been completed.

With the package transfer means then made ready for operation, and the regulator 60 set for adequate operating pressure (i.e., about 85 psi), the transfer operation is commenced as diagrammed in FIGS. 4 and 5 by manually presenting a yarn package P wound on a core tube T, together with a dye core S inserted within tube T, to the chuck means for location thereover. The core tube T will usually be a paper tube, while a commonly employed form of dye core S consists of a spiral stainless steel spring having the coils thereof laced in a manner, corresponding to that shown in US. Pat. No. 2,670,852, that allows spring compression while controlling maximum spring length.

Such presentation is facilitated by initially extending the inserted dye core S in the direction of insertion beyond the core tube T so that an extending end portion thereof is visible for readily locating it over the first gripping component 44 of chuck means 20 and seating it at the adjacent locating shoulder 40', as indicated in FIG. 4; after which the core tube T together with the package P wound thereon can be moved beyond the located dye core S to actuate operation of chuck means 20 in response to package position when the core tube T has been located over the second chuck means gripping component 46, as indicated in FIG. 5.

Actuation of chuck means operation under FIG. 5 conditions results from contact by package P with the push button operator of valve 34 at package support plate 14. This contact causes valve 34 to shift from its normally closed condition to its right hand FIG. 3 mode so that the air supply available thereat, as previously noted, is allowed to pass therethrough to port No. 6 of connector block 68 from which two air supply connections are made within control box 68. One of these control box connections directs air from port No. 6 to a pulse valve 76 which acts to transmit a momentary air pulse for shifting valve 74 to its left hand mode so that the available air supply thereat from port No. 4 of connector block 68 is connected in turn at port No. 5 from which air is directed through the cam operated threeway poppet valve 28, which is normally open, and reversely through a quick dump exhaust valve 78 to the air port 52 of chuck means 20 for expanding the first gripping component 44 thereof to engage the located dye core S. Concurrently, the air supply from connector block port No. 5 is delivered through a by-pass 80 to the chuck means air port 50 for expanding the second gripping component 46 thereof to engage the located core tube T.

The other control box connection through connector block port No. 6, that is made upon package contact at support plate valve 34, runs to the left hand FIG. 3 side of cylinder spool valve 64 and acts to shift this valve to its left hand mode so as to direct the available air supply thereat to the front or rod end of cylinder 16 and thereby cause retraction of chuck means 20 while the rear or piston end of cylinder end to exhaust. The reaction time at cylinder 16 is such as to delay chuck means retraction enough to allow secure gripping of the dye core S and core tube T first.

As chuck means retraction proceeds, the dye core 8 and core tube T are both pulled axially through the package P, and when the dye core S has reached a proper position within package P for supporting it upon removal of core tube T the rod member 26carried by chuck means 20 will act at the cam operator of poppet valve 28, as indicated in FIG. 6. The result is a shifting of valve 28 to its upper FIG. 3 mode so as to block the air supplythereat and exhaust the connection at chuck means air port 52 and thereby release the engagement of the first gripping component 44 with the dye core S to leave it in place as the chuck means retraction continues. The quick dump exhaust valve 78 operates at this time to render the release of dye core S dependably consistent, although it may be necessary as noted earlier for the operator to hold the dye core S manually at its released position in order to strip it completely from chuck means 20 if the package P being handled does not contract enough during transfer to cause such stripping. In any event, by setting the position of poppet valve 28 in the path of chuck means rod member 26 so that the release of dye core S is timed to occur when the extending end of core S has been pulled to a suitable disposition at the unsupported end of package p the released position of dye core S within package P can be depended on to be consistently satisfactory for transfer purposes.

As the chuck means retraction continues the still gripped core tube T is carried with it to complete withdrawal thereof from package P, and the next cam operated poppet valve 30 is-set for operating contact with chuck means rod member 26 when such withdrawal is complete, as indicated in FIG. 7. The resulting operation of valve 30 will render its upper FIG. 3 mode active to connect the available air supply thereat with. port No. l of connector block 68 from which air is di- I rected to the right hand end of valve 74 for shifting it back to the right hand FIG. 3 mode so as again toblock the available air supply thereat and concurrently exhaust the connection through connector block port No.

The final phase of the transfer-means operating cycle is then completed .by full retraction of chuck means within stripping sleeve 22 so that the withdrawn core tube T is caused to fall away by gravity and the chuck means rod member 26 actuates the final cam operated valve 32, as indicated in FIG. 8. This actuation of valve 32 renders its upper FIG. 3 mode active to direct the air supply available thereat to port No. 3 of connector block 68 from which an air signal is transmitted to the right hand end of spool valve64 so as to render its right hand FIG. 3 mode active, as the opposing signal from support plate valve 34 will have been interrupted by removal of package contact thercat. Spool valve 64 thereupon reverses cylinder 16 by directing air to its rear. piston end and allowing its front rod end to exhaus't sokthat chuckmeans 20 is returned to its initial fully extended position. During this return of chuck rne'ans 20 to init ial position the rod member 26 carried thereby will successively release the cam operated poppet valves 32, and 28 to resume their normal lower FlG. 3 modes and thereby reset the control system for a succeeding operating cycle as the current one is completed. As the operator can remove the transferred "package P as soon as the core tube T has been withdrawn. he will normally have time to be ready with a i new package P and inserted dye core S shortly after eachoperating cycle is completed so that production rates'fully comparable with, or better than, those provided by prior practice can be achieved according to the present invention with consistently dependable transfer. results.

The present invention has been described in detail above for purposes of illustration only and is not intended to be limited by this description or otherwise to exclude any variation or equivalent form or procedure that would be apparent from, or reasonably suggested core tube on which it has been wound to a core suitable forsupporting the package for dyeing, which method .comprises inserting the dye core within the core tube having said package wound thereon, locating corresponding end portions of said dye core and core tube over a rcciprocablc chuck means having spaced first :-and second positions for respectively receiving said dye J-coreand core tube and at each of which positions said gchuck means is expandable to grip said end portions, cati'sing said: chuck means to grip the located end porpens andtomove away from the corresponding end of said yarn package while supporting the package against -movement's-with said'chuck means, and then causing fs'aid chuckmeans to release the dyecore when it has beerrmoved .to a proper position within the package for supporting'the same while completing withdrawal of the core tube from the package.

2. The method defined by claim 1 wherein said chuck means is further caused to release the core tube following withdrawal thereof and then return to its initial position for location of succeeding dye core and core tube end portions thereover.

3. The method defined by claim 1 wherein said chuck means is caused to grip the located dye core and core tube end portions and to move away from the corresponding end of said yarn package by actuation of chuck operation in response to the position assumed by said package upon location of said core tube'end portion at said second chuck means position.

4. The method defined in claim 3 wherein the inserted dye core is initially extended in the direction of insertion beyond said core tube to facilitate location of the extended dye core end portion at said first chuck means position, andthe core tube together with the yarn package wound thereon is then moved beyond the located dye core to actuate chuck operation in response to package position when said core tube has been located for gripping at said second chuck means position.

5. Apparatus for transferring a yarn package from a core tube on which it has been wound to a core suitable for supporting the package for dyeing, said apparatus comprising a plate member proportioned for endwise support of said yarn package while being apertured for clearing the core tube on which said package is wound. chuck means mounted for reciprocation perpendicularly in relation to said plate member between an initial position at which said chuck means is extended through said plate member aperture sufficiently for receiving end portions of said dye core and core tube thereover at respective spaced first and second portions thereof and retracted position at which said chuck means is withdrawn from such extension sufficiently to space it from said plate member in excess of the axial length of said core tube. said chuck means being expandable at each of said first and second portions to grip said dye core and core tube end portions interiorly when the same have been located thereover incident to placing said yarn package on said plate member, and operating means for causing said chuck means to expand at said initial position for gripping said end portions and to move between said initial and retracted positions while releasing the dye core when it has been pulled to a proper position within the yarn package for supporting the same and subsequently releasing the core tube upon complete withdrawal thereof from the package.

6. Apparatus as defined in claim 5 wherein said first chuck means portion is arranged adjacent the extending nose of said chuck means and is formed in a reduced diameter providing an annular shoulder serving as a locating seat for a dye core received there-at. and said second chuck means portion is arranged adjacent the base of said chuck means for receiving a core tube thereat.

7. Apparatus as defined in claim 5 wherein said chuck operating means includes an element positioned at said plate member for displacement by a yarn package when the same is placed on said plate member for support, and which element operates upon such displacement to trigger sequential expansion and movement from said initial position of said chuck means.

8. Apparatus as defined in claim 7 wherein said chuck operating means additionally includes a first control member for releasing the chuck expansion at said first chuck means portion when the dye core has been pulled to a proper position within the yarn package for supporting the same, a second control member for releasing the chuck expansion at said second chuck means portion when the core tube has been pulled free of the package. and a third control member for reversing the direction of ehuch movement at said retracted position.

9. Apparatus as defined in claim 5 wherein said chuck operating means is an air control system arand then to release the expansion at the second chuck means portion as retracted position is approached, and finally to reverse the direction of movement of said chuck means at said retracted position to return the same to said initial position for a succeeding operating cycle.

a: in s a:

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3I906I598 Dated September 23, 1975 l fi fl George Gordon Hacker It is certified that error appears in the above-identified. patent and that said Letters Patent are hereby corrected as shown below:

Column 1, line 41, after "U.S." insert -Patents-;

Column 4, line 43, delete "referennce" and insert therefor reference; Column 8, line 25, after "and" insert -'a-; Column 8, line 64, delete "chuch" and insert therefor -chuck.

Engncd and Scaled tl'us sixteenth Day of December 1975 [SEAL] Arrest:

RUTH C. MASON C. MARSHALL DANN Altesting Officer Commissioner ofParents and Trademarks 

1. The method of transferring a yarn package from a core tube on which it has been wound to a core suitable for supporting the package for dyeing, which method comprises inserting the dye core within the core tube having said package wound thereon, locating corresponding end portions of said dye core and core tube over a reciprocable chuck means having spaced first and second positions for respectively receiving said dye core and core tube and at each of which positions said chuck means is expandable to grip said end portions, causing said chuck means to grip the located end portions and to move away from the corresponding end of said yarn package while supporting the package against movement with said chuck means, and then causing said chuck means to release the dye core when it has been moved to a proper position within the package for supporting the same while completing withdrawal of the core tube from the package.
 2. The method defined by claim 1 wherein said chuck means is further caused to release the core tube following withdrawal thereof and then return to its initial position for location of succeeding dye core and core tube end portions thereover.
 3. The method defined by claim 1 wherein said chuck means is caused to grip the located dye core and core tube end portions and to move away from the corresponding end of said yarn package by actuation of chuck operation in response to the position assumed by said package upon location of said core tube end portion at said second chuck means position.
 4. The method defined in claim 3 wherein the inserted dye core is initially extended in the direction of insertion beyond said core tube to facilitate location of the extended dye core end portion at said first chuck means position, and the core tube together with the yarn package wound thereon is then moved beyond the located dye core to actuate chuck operation in response to package position when said core tube has been located for gripping at said second chuck means position.
 5. Apparatus for transferring a yarn package from a core tube on which it has been wound to a core suitable for supporting the package for dyeing, said apparatus comprising a plate member proportioned for endwise support of said yarn package while being apertured for clearing the core tube on which said package is wound, chuck means mounted for reciprocation perpendicularly in relation to said plate member between an initial position at which said chuck means is extended through said plate member aperture sufficiently for receiving end portions of said dye core and core tube thereover at respective spaced first and second portions thereof and retracted position at which said chuck means is withdrawn from such extension sufficiently to space it from said plate member in excess of the axial length of said core tube, said chuck means being expandable at each of said first and second portions to grip said dye core and core tube end portions interiorly when the same have been located thereover incident to placing said yarn package on said plate member, and operating means for causing said chuck means to expand at said initial position for gripping said end portions and to move between said initial and retracted positions while releasing the dye core when it has been pulled to a proper position within the yarn package for supporting the same and subsequently releasing the core tube upon complete withdrawal thereof from the package.
 6. Apparatus as defined in claim 5 wherein said first chuck means portion is arranged adjacent the extending nose of said chuck means and is formed in a reduced diameter providing an annular shoulder serving as a locating seat for a dye core received thereat, and said second chuck means portion is arranged adjacent the base of said chuck means for receiving a core tube thereat.
 7. Apparatus as defined in claim 5 wherein said chuck operating means includes an element positioned at said plate member for displacement by a yarn package when the same is placed on said plate member for support, and which element operates upon such displacement to trigger sequential expansion and movement from said initial position of said chuck means.
 8. Apparatus as defined in claim 7 wherein said chuck operating means additionally includes a first control member for releasing the chuck expansion at said fiRst chuck means portion when the dye core has been pulled to a proper position within the yarn package for supporting the same, a second control member for releasing the chuck expansion at said second chuck means portion when the core tube has been pulled free of the package, and a third control member for reversing the direction of chuch movement at said retracted position.
 9. Apparatus as defined in claim 5 wherein said chuck operating means is an air control system arranged to expand said chuck means at said first and second portions and then promptly move away from said initial position upon reception of dye core and core tube end portions respectively at said first and second portions, and further to release the expansion at the first chuck means portion when the dye core has been pulled into proper position within said package, and then to release the expansion at the second chuck means portion as retracted position is approached, and finally to reverse the direction of movement of said chuck means at said retracted position to return the same to said initial position for a succeeding operating cycle. 